Road-clearing device



eb. 4, 1930. H. R. ANDREW ROAD CLEARING DEVICE 'Filed May 1l, 1928 @wwwPaie-ated Fes; 4, 1930 A UNITED; STATES' maar afnNnnEw, on aoswnLL,

Application med lay 11,;

' This invention appertains to new and useg 1n road clearing devices.The primary object of the invention is to rovide an electro-magnetapparatus to clear 6 om the paths of they wheels of vehicles,particularly when the wheels are equipped with pneumatic tires, nails,tacks, `small pieces o metals and the like and to some degree othersmall obects, which are capable o puncturl ing or ot erwise injuring thetires. l

Another object of the invention is to provide a device embodying theaforementioned features, together with means for transporting the samein a convenient and effective manner, preferably on a motor actuated4vehicle such as a truck or the like.

ful improvements A further object of the invention is to provide adevice that will be of simple and durable structure and et be of nominalcost and maximum results or the purposesintended. A still further objectof the invention is to provide a device of the character mentioned onwhich a separate power unit is mounted thereby maintaining a uniformcurrent, irrespective of the speed ofthe motor of the vehicle.

A construction designed to? carry out the `invention will bevhereinafter described together with other features of the invention.

The invention will be more readily understood from a reading of thefollowing specication and by reference to the accompanying drawin s, inwhich an example of the invention is s o, and wherein:

Figure l is a rear view of apopular make of truck to which my roadclearing device is attached in accordance with my invention,

Y Fi re 2 is a side -view of the device showin t e rear portion of atruck,

igure 3 is a side view of the electro-magnet, portions being brokenaway,

Figure 4 is a plan view of the same',

Figure 5 is an end view. v r

Employing like characters of reference for corresponding artsthroughout, the numeral 10 designates t e rear wheels of a ,motorvehicle 11. The details of structure are considered of no significanceas the invention ma be applied to ang suitable vehicle.

t the underneat rearlportion of the and Bonn-camine mavrcnbody of 1928.Serial I0. 277,075..

frameof the vehicle 1s loosely af transverse bar 12in bearin 13 whichare.` secured to the body of truc VTvpelectromagnets 14 "are `suspended.from the bar 12 by means of chalns nected to the electro-magnets 15.The chains are conby means of the other. However, it is apparent thatother means for suspension other than chains may be used. For raisingand lowering the electro-magnets as each articular case .maynecessitate, a vlever notched segment 18 secured t the side of the thevehicl It is obvious lthat. the electro-magnets may lhang 'nearer theroad when the same is smooth but on a fipv'ement of' irregularities andindentations e magnets -will have to swing higher from the road.

The electro-magnet 14 is composed of an beam `19 to the center web ofwhich is attached a magnet core 20. This ma et core is wound withsuitable wire 21 an is magnetized by current supplied from a generator(not showng) mounted on the truck. A brass plate 22 is ridged across theanges of the I-beam, and over the magnet core. An le strips 23 may beused as retaining means or theL plate 22 or any suitable means. Suchobjects as are attracted by the magnet will be held to this plate andinstantly released when the circuit of the coil is broken on account othe brass surface to which they are attached..` Mud guards 24 may befastened to the side of the electro-magnet to prevent the splashing ofmudand the like on the magnets. t

In ractice one man can easily operate the inachmeo .The o erator drivesthe truck along one side of t e road at a comparatively f' eye-bolts 16at l,one end, and to the bar v12 at 'i 17 1s fastened to bar 12 at oneside of the vehicle and is engaged with a`- 'rc i.

slow speed. The length of the two electromagnets are substantiallyone-half the width of an ordinary road.

It is obviousof course that the lengthy of the magnets may lvary9`5.

the scrap iron and etc.,

Various changes in the m61; mi? 1th@ diexem: pamsa @s We@ ya mdmm@ andmlmtims may ha th@ @wpa o the @.ppemed daim.

Having mow escribed mi@ mvmtam claim is v En apparatus of @the @hmmmfscfiba, the combinati@ a' smak imam@ rammed on frum mmf whees? a 'fofiomaea in bearings seemed at@ th@ Lmf 'ai e of Said frame behind said mmWaesj pumilby @il chains having @hr upper @nda Secund ffm@ periphefy @ffsaid ms a plurality eam mmgnels sauc. is@ the nmv @mds @i said@Llamas-19 a mamuay @ambie-3 Eleva? having iis lower end. Secund t@ saidrm im? roaaifom of smi@ rod 'aE-0 ms@ md lows? said @setmsaid imm@ fm"cmpemitng with said ver im holc' Said lever and sai @heim-magnet@

